Event

Event

 

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Event
{
    class Program
    {
        static void Main(string[] args)
        {
            var tower = new ClockTower();
            var john = new Person("John", tower);

            tower.ChimeFivePM();
            tower.ChimeSixAM();

            Console.ReadKey();
        }
    }

    public class Person
    {
        private string _name;
        private ClockTower _tower;
        public Person(string name, ClockTower tower)
        {
            _name = name;
            _tower = tower;

            _tower.Chime += (object sender, ClockTowerEvnetArgs args) => { 
                Console.WriteLine("{0} heard the clock chime.", _name); 
                switch(args.Time)
                {
                    case 6:
                        Console.WriteLine("{0} is waking up.", _name);
                        break;

                    case 17:
                        Console.WriteLine("{0} is going home.", _name);
                        break;
                }
            };
        }        
    }

    public class ClockTowerEvnetArgs : EventArgs
    {
        public int Time { get; set; }
    }

    public delegate void ChimeEventHandler(object sender, ClockTowerEvnetArgs args);
    public class ClockTower
    {
        public event ChimeEventHandler Chime;

        public void ChimeFivePM()
        {
            Chime(this, new ClockTowerEvnetArgs { Time = 17 });
        }
        
        public void ChimeSixAM()
        {
            Chime(this, new ClockTowerEvnetArgs { Time = 6 });
        }
    }
}

 

 

 

 

 

 

Anonymous Methods and Lambda Expression

Anonymous Methods and Lambda Expression

 

 

 

https://www.youtube.com/watch?v=KVp_E-hTG0k